1 | /**
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2 | *#########################################################################
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3 | *
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4 | * A component of the Gatherer application, part of the Greenstone digital
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5 | * library suite from the New Zealand Digital Library Project at the
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6 | * University of Waikato, New Zealand.
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7 | *
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8 | * Author: Michael Dewsnip, NZDL Project, University of Waikato
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9 | *
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10 | * Copyright (C) 2005 New Zealand Digital Library Project
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11 | *
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12 | * This program is free software; you can redistribute it and/or modify
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13 | * it under the terms of the GNU General Public License as published by
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14 | * the Free Software Foundation; either version 2 of the License, or
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15 | * (at your option) any later version.
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16 | *
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17 | * This program is distributed in the hope that it will be useful,
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 | * GNU General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, write to the Free Software
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24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25 | *########################################################################
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26 | */
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27 |
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28 | package org.greenstone.gatherer.remote;
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29 |
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30 | import java.io.*;
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31 | import java.net.*;
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32 | import java.util.*;
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33 | import java.util.zip.*;
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34 | import javax.swing.*;
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35 | import java.io.ByteArrayOutputStream;
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36 | import org.greenstone.gatherer.Configuration;
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37 | import org.greenstone.gatherer.DebugStream;
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38 | import org.greenstone.gatherer.Dictionary;
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39 | import org.greenstone.gatherer.FedoraInfo;
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40 | import org.greenstone.gatherer.GAuthenticator;
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41 | import org.greenstone.gatherer.Gatherer;
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42 | import org.greenstone.gatherer.collection.CollectionManager;
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43 | import org.greenstone.gatherer.shell.GShell;
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44 | import org.greenstone.gatherer.util.UnzipTools;
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45 | import org.greenstone.gatherer.util.Utility;
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46 | import org.apache.commons.httpclient.HttpClient;
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47 | import org.apache.commons.httpclient.methods.PostMethod;
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48 | import org.apache.commons.httpclient.methods.GetMethod;
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49 | import org.apache.commons.httpclient.HttpException;
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50 | import org.apache.commons.httpclient.methods.multipart.FilePart;
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51 | import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
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52 | import org.apache.commons.httpclient.methods.multipart.Part;
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53 | import org.apache.commons.httpclient.methods.multipart.*;
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54 | import org.apache.commons.httpclient.params.*;
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55 | import org.apache.commons.httpclient.HttpStatus;
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56 |
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57 |
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58 | public class RemoteGreenstoneServer
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59 | {
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60 | // A PasswordAuthentication object is created whenever it is required
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61 | static private PasswordAuthentication remote_greenstone_server_authentication = null;
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62 | // static private PasswordAuthentication remote_greenstone_server_authentication = new PasswordAuthentication(System.getProperty("user.name"), new char[] { });
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63 |
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64 | // the language and region environment variables (in "lang_REGION" form)
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65 | // this is necessary in order for the client and server sides to zip and unzip
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66 | // using the same settings
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67 | public final String lang_region;
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68 |
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69 | private ActionQueue remote_greenstone_server_action_queue;
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70 | private RemoteGreenstoneServer.ProgressBar progress_bar;
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71 |
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72 | public RemoteGreenstoneServer() {
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73 | // Create the progress_bar first since ActionQueue uses it in its thread
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74 | // (the thread will start immediately).
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75 | progress_bar = new RemoteGreenstoneServer.ProgressBar();
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76 | remote_greenstone_server_action_queue = new ActionQueue();
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77 |
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78 | String langReg = System.getenv("LANG");
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79 | lang_region = (langReg == null) ? "" : langReg;
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80 | }
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81 |
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82 | // ----------------------------------------------------------------------------------------------------
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83 | // PUBLIC LAYER
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84 | // ----------------------------------------------------------------------------------------------------
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85 | public String deleteCollection(String collection_name)
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86 | {
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87 | return performAction(new RemoteGreenstoneServerAction.DeleteCollectionAction(collection_name));
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88 | }
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89 |
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90 |
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91 | public String deleteCollectionFile(String collection_name, File collection_file)
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92 | {
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93 | return performAction(new RemoteGreenstoneServerAction.DeleteCollectionFileAction(collection_name, collection_file));
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94 | }
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95 |
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96 |
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97 | public String downloadCollection(String collection_name)
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98 | {
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99 | return performAction(new RemoteGreenstoneServerAction.DownloadCollectionAction(collection_name));
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100 | }
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101 |
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102 |
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103 | public String downloadCollectionArchives(String collection_name)
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104 | {
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105 | return performAction(new RemoteGreenstoneServerAction.DownloadCollectionArchivesAction(collection_name));
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106 | }
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107 |
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108 |
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109 | public String downloadCollectionConfigurations()
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110 | {
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111 | return performAction(new RemoteGreenstoneServerAction.DownloadCollectionConfigurationsAction());
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112 | }
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113 |
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114 |
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115 | public String downloadCollectionFile(String collection_name, File collection_file)
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116 | {
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117 | return performAction(new RemoteGreenstoneServerAction.DownloadCollectionFileAction(collection_name, collection_file));
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118 | }
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119 |
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120 | // get web.xml from the server -- for a remote gli of GS3
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121 | public String downloadWebXMLFile()
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122 | {
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123 | return performAction(new RemoteGreenstoneServerAction.DownloadWebXMLFileAction());
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124 | }
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125 |
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126 | public String getScriptOptions(String script_name, String script_arguments)
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127 | {
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128 | return performAction(new RemoteGreenstoneServerAction.GetScriptOptionsAction(script_name, script_arguments));
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129 | }
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130 |
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131 | //get all available site names from the server -- for a remote gli of GS3
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132 | public String getSiteNames()
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133 | {
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134 | return performAction(new RemoteGreenstoneServerAction.GetSiteNamesAction());
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135 | }
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136 |
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137 | public String moveCollectionFile(String collection_name, File source_collection_file, File target_collection_file)
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138 | {
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139 | return performAction(new RemoteGreenstoneServerAction.MoveCollectionFileAction(
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140 | collection_name, source_collection_file, target_collection_file));
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141 | }
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142 |
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143 |
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144 | public String newCollectionDirectory(String collection_name, File new_collection_directory)
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145 | {
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146 | return performAction(new RemoteGreenstoneServerAction.NewCollectionDirectoryAction(
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147 | collection_name, new_collection_directory));
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148 | }
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149 |
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150 |
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151 | public String runScript(String collection_name, String script_name, String script_arguments, GShell shell)
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152 | {
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153 | return performAction(new RemoteGreenstoneServerAction.RunScriptAction(
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154 | collection_name, script_name, script_arguments, shell));
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155 | }
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156 |
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157 |
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158 | public String uploadCollectionFile(String collection_name, File collection_file)
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159 | {
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160 | return performAction(new RemoteGreenstoneServerAction.UploadCollectionFilesAction(
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161 | collection_name, new File[] { collection_file }));
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162 | }
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163 |
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164 |
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165 | public String uploadCollectionFiles(String collection_name, File[] collection_files)
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166 | {
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167 | return performAction(new RemoteGreenstoneServerAction.UploadCollectionFilesAction(collection_name, collection_files));
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168 | }
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169 |
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170 |
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171 | public String uploadFilesIntoCollection(String collection_name, File[] source_files, File target_collection_directory)
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172 | {
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173 | return performAction(new RemoteGreenstoneServerAction.UploadFilesIntoCollectionAction(
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174 | collection_name, source_files, target_collection_directory));
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175 | }
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176 |
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177 | public boolean exists(String collection_name, File collection_file)
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178 | {
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179 | String result = performAction(new RemoteGreenstoneServerAction.ExistsAction(collection_name, collection_file));
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180 | if(result.indexOf("exists") != -1) {
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181 | return true;
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182 | }
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183 | else if(result.indexOf("does not exist") != -1) {
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184 | return false;
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185 | }
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186 | return false;
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187 | }
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188 |
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189 | public int getGreenstoneVersion()
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190 | {
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191 | // returns message "Greenstone version is: <version number of the Greenstone remote server>"
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192 | String result = performAction(new RemoteGreenstoneServerAction.VersionAction());
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193 | int index = result.indexOf(":");
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194 | if(index != -1) {
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195 | result = result.substring(index+1).trim(); // skip the space after colon, must remove surrounding spaces
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196 | }
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197 | int greenstoneVersion = Integer.parseInt(result);
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198 | return greenstoneVersion;
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199 | }
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200 |
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201 | /** For constructing the preview command (the library URL) with */
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202 | public String getLibraryURL(String serverHomeURL)
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203 | {
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204 | // returns message "Greenstone library URL suffix is: <e.g. /greenstone3/library or /gsdl/cgi-bin/library>"
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205 | String libSuffix = performAction(new RemoteGreenstoneServerAction.LibraryURLSuffixAction());
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206 | int index = libSuffix.indexOf(":");
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207 | if(index != -1) {
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208 | libSuffix = libSuffix.substring(index+1).trim(); // skip the space after colon and remove surrounding spaces
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209 | }
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210 |
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211 | // serverHomeURL is of the form, http://domain/other/stuff. We want the prefix upto & including domain
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212 | // and prepend that to the libraryURLSuffix
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213 | index = -1;
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214 | for(int i = 0; i < 3; i++) {
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215 | index = serverHomeURL.indexOf("/", index+1);
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216 | if(index == -1) { // shouldn't happen, but if it does, we'll be in an infinite loop
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217 | break;
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218 | }
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219 | }
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220 | serverHomeURL = serverHomeURL.substring(0, index);
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221 | return serverHomeURL + libSuffix;
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222 | }
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223 |
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224 | // ----------------------------------------------------------------------------------------------------
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225 |
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226 |
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227 | public void exit()
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228 | {
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229 | System.err.println("Exiting, number of jobs on queue: " + remote_greenstone_server_action_queue.size());
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230 |
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231 | // If there are still jobs on the queue we must wait for the jobs to finish
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232 | while (remote_greenstone_server_action_queue.size() > 0) {
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233 | synchronized (remote_greenstone_server_action_queue) {
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234 | try {
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235 | DebugStream.println("Waiting for queue to become empty...");
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236 | remote_greenstone_server_action_queue.wait(500);
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237 | }
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238 | catch (InterruptedException exception) {}
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239 | }
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240 | }
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241 | }
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242 |
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243 |
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244 | // ----------------------------------------------------------------------------------------------------
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245 | // QUEUE LAYER
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246 | // ----------------------------------------------------------------------------------------------------
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247 |
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248 |
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249 | /** Returns null if we cannot wait for the action to finish, "" if the action failed, or the action output. */
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250 | private String performAction(RemoteGreenstoneServerAction remote_greenstone_server_action)
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251 | {
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252 | // Check for whether the queue thread stopped running because
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253 | // the user cancelled out. If so, exit GLI.
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254 | if(remote_greenstone_server_action_queue.hasExited()) {
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255 | remote_greenstone_server_action_queue.clear();
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256 | //remote_greenstone_server_action_queue = null;
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257 | Gatherer.exit();
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258 | return "";
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259 | }
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260 |
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261 | // Add the action to the queue
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262 | remote_greenstone_server_action_queue.addAction(remote_greenstone_server_action);
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263 | String threadName = Thread.currentThread().getName();
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264 |
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265 | // If we're running in the GUI thread we must return immediately
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266 | // We cannot wait for the action to complete because this will block any GUI updates
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267 | if (SwingUtilities.isEventDispatchThread()) {
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268 | System.err.println(threadName
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269 | + "\tACTION QUEUED: In event dispatch thread, returning immediately...\n\t"
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270 | + remote_greenstone_server_action);
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271 | return null;
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272 | }
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273 |
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274 | // Otherwise wait until the action is processed
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275 | try {
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276 | synchronized (remote_greenstone_server_action) {
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277 | while(!remote_greenstone_server_action.processed) {
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278 | //System.err.println("Waiting for action to complete...: " + remote_greenstone_server_action);
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279 | DebugStream.println("Waiting for action to complete...");
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280 | remote_greenstone_server_action.wait(); // wait to be notified when the action has been processed
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281 | }
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282 | }
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283 | } catch (Exception e) {
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284 | System.err.println("RemoteGreenstoneServer.performAction() - exception: " + e);
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285 | e.printStackTrace();
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286 | }
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287 |
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288 | // Return "" if the action failed
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289 | if (!remote_greenstone_server_action.processed_successfully) {
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290 | return "";
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291 | }
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292 | // Otherwise return the action output
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293 | return remote_greenstone_server_action.action_output;
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294 | }
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295 |
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296 |
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297 | // ----------------------------------------------------------------------------------------------------
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298 | // PROGRESS BAR
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299 | // ----------------------------------------------------------------------------------------------------
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300 |
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301 | static class ProgressBar
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302 | extends JProgressBar
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303 | {
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304 | public ProgressBar()
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305 | {
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306 | setBackground(Configuration.getColor("coloring.collection_tree_background", false));
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307 | setForeground(Configuration.getColor("coloring.collection_tree_foreground", false));
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308 | setString(Dictionary.get("FileActions.No_Activity"));
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309 | setStringPainted(true);
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310 | }
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311 |
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312 | /** synchronized to avoid conflicts since several threads access this */
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313 | synchronized public void setAction(String action)
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314 | {
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315 | if (action != null) {
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316 | DebugStream.println(action);
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317 | }
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318 |
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319 | // We cannot call this from the GUI thread otherwise the progress bar won't start
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320 | if (SwingUtilities.isEventDispatchThread()) {
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321 | System.err.println("ERROR: RemoteGreenstoneServerProgressBar.setAction() called from event dispatch thread!");
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322 | return;
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323 | }
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324 |
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325 | // Set the string on the progress bar, and start or stop it
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326 | if (action == null) {
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327 | setString(Dictionary.get("FileActions.No_Activity"));
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328 | setIndeterminate(false);
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329 | }
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330 | else {
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331 | setString(action);
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332 | setIndeterminate(true);
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333 | }
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334 | }
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335 | }
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336 |
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337 | /** synchronized to avoid conflicts since several threads access this */
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338 | synchronized public RemoteGreenstoneServer.ProgressBar getProgressBar()
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339 | {
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340 | return progress_bar;
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341 | }
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342 |
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343 |
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344 | // ----------------------------------------------------------------------------------------------------
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345 | // AUTHENTICATION LAYER
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346 | // ----------------------------------------------------------------------------------------------------
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347 |
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348 | static private class RemoteGreenstoneServerAuthenticateTask
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349 | extends Thread
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350 | {
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351 | public void run()
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352 | {
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353 | remote_greenstone_server_authentication = new RemoteGreenstoneServerAuthenticator().getAuthentication();
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354 | }
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355 |
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356 |
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357 | static private class RemoteGreenstoneServerAuthenticator
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358 | extends GAuthenticator
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359 | {
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360 | public PasswordAuthentication getAuthentication(String username, String password)
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361 | {
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362 | return getPasswordAuthentication(username,password);
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363 | }
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364 |
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365 | public PasswordAuthentication getAuthentication()
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366 | {
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367 | return getPasswordAuthentication();
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368 | }
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369 |
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370 | protected String getMessageString()
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371 | {
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372 | if (Gatherer.GS3){
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373 | return (Dictionary.get("RemoteGreenstoneServer.Authentication_Message_gs3") + " " + Configuration.site_name);
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374 | }
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375 | return Dictionary.get("RemoteGreenstoneServer.Authentication_Message");
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376 | }
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377 | }
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378 | }
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379 |
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380 | public void set_remote_greenstone_server_authentication_to_null() {
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381 | remote_greenstone_server_authentication = null;
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382 | }
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383 |
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384 | private void authenticateUser()
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385 | throws RemoteGreenstoneServerAction.ActionCancelledException
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386 | {
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387 | // If we don't have any authentication information then ask for it now
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388 | if (remote_greenstone_server_authentication == null) {
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389 | try {
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390 | // We have to do this on the GUI thread
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391 | SwingUtilities.invokeAndWait(new RemoteGreenstoneServerAuthenticateTask());
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392 | }
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393 | catch (Exception exception) {
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394 | System.err.println("Exception occurred when authenticating the user: " + exception);
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395 | DebugStream.printStackTrace(exception);
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396 | }
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397 |
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398 | // If it is still null then the user has cancelled the authentication, so the action is cancelled
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399 | if (remote_greenstone_server_authentication == null) {
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400 | throw new RemoteGreenstoneServerAction.ActionCancelledException();
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401 | }
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402 | }
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403 | }
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404 |
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405 |
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406 | public String getUsername()
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407 | {
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408 | if (remote_greenstone_server_authentication != null) {
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409 | return remote_greenstone_server_authentication.getUserName();
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410 | }
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411 |
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412 | return null;
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413 | }
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414 |
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415 |
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416 | // ----------------------------------------------------------------------------------------------------
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417 | // REQUEST LAYER
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418 | // ----------------------------------------------------------------------------------------------------
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419 |
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420 |
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421 | /** Returns the command output if the action completed, throws some kind of exception otherwise. */
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422 | String downloadFile(String gliserver_args, String file_path)
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423 | throws Exception
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424 | {
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425 | while (true) {
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426 | // Check that Configuration.gliserver_url is set
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427 | if (Configuration.gliserver_url == null) {
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428 | throw new Exception("Empty gliserver URL: please set this in Preferences before continuing.");
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429 | }
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430 |
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431 | // Ask for authentication information (if necessary), then perform the action
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432 | authenticateUser();
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433 | String gliserver_url_string = Configuration.gliserver_url.toString();
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434 | String command_output = downloadFileInternal(gliserver_url_string, gliserver_args, file_path);
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435 |
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436 | // Check the first line to see if authentication has failed; if so, go around the loop again
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437 | if (command_output.startsWith("ERROR: Authentication failed:")) {
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438 | JOptionPane.showMessageDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Error", command_output.substring("ERROR: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.ERROR_MESSAGE);
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439 | remote_greenstone_server_authentication = null;
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440 | continue;
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441 | }
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442 | // Check if the collection is locked by someone else; if so, see if the user wants to steal the lock
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443 | else if (command_output.startsWith("ERROR: Collection is locked by: ")) {
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444 | if (JOptionPane.showConfirmDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Steal_Lock_Message", command_output.substring("ERROR: Collection is locked by: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.YES_NO_OPTION) == JOptionPane.NO_OPTION) {
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445 | // The user has decided to cancel the action
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446 | throw new RemoteGreenstoneServerAction.ActionCancelledException();
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447 | }
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448 |
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449 | // The user has decided to steal the lock... rerun the command with "&steal_lock="
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450 | gliserver_args += "&steal_lock=";
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451 | continue;
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452 | }
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453 | // Handle other types of errors by throwing an exception
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454 | else if (command_output.startsWith("ERROR: ")) {
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455 | throw new Exception(command_output.substring("ERROR: ".length()));
|
---|
456 | }
|
---|
457 |
|
---|
458 | // There were no exceptions thrown so the action must have succeeded
|
---|
459 | return command_output;
|
---|
460 | }
|
---|
461 | }
|
---|
462 |
|
---|
463 | /** Returns true or false depending on whether authentication is required for the cmd
|
---|
464 | * string embedded in the given gliserver_args. No authentication is required for either
|
---|
465 | * of the commands greenstone-server-version and get-library-url-suffix. */
|
---|
466 | private boolean isAuthenticationRequired(String gliserver_args) {
|
---|
467 | return ((gliserver_args.indexOf("greenstone-server-version") == -1)
|
---|
468 | && (gliserver_args.indexOf("get-library-url-suffix") == -1));
|
---|
469 | }
|
---|
470 |
|
---|
471 |
|
---|
472 | /** Returns the command output if the action completed, throws some kind of exception otherwise.
|
---|
473 | * Package access, so that RemoteGreenstoneServerAction.java can call this.
|
---|
474 | */
|
---|
475 | String sendCommandToServer(String gliserver_args, GShell shell)
|
---|
476 | throws Exception
|
---|
477 | {
|
---|
478 | while (true) {
|
---|
479 |
|
---|
480 | // Check that Configuration.gliserver_url is set
|
---|
481 | if (Configuration.gliserver_url == null) {
|
---|
482 | throw new Exception("Empty gliserver URL: please set this in Preferences before continuing.");
|
---|
483 | }
|
---|
484 |
|
---|
485 | // Ask for authentication information (if necessary), then perform the action
|
---|
486 | if(isAuthenticationRequired(gliserver_args)) {
|
---|
487 | authenticateUser();
|
---|
488 | }
|
---|
489 | String gliserver_url_string = Configuration.gliserver_url.toString();
|
---|
490 | String command_output = sendCommandToServerInternal(gliserver_url_string, gliserver_args, shell);
|
---|
491 |
|
---|
492 | // Debugging - print any ok messages to stderr
|
---|
493 | //if(!(command_output.trim().startsWith("<"))) {
|
---|
494 | //System.err.println("**** RECEIVED (sendCommandToServer()): " + command_output);
|
---|
495 | //}
|
---|
496 |
|
---|
497 | // Check the first line to see if authentication has failed; if so, go around the loop again
|
---|
498 | if (command_output.startsWith("ERROR: Authentication failed:")) {
|
---|
499 | JOptionPane.showMessageDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Error", command_output.substring("ERROR: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.ERROR_MESSAGE);
|
---|
500 | remote_greenstone_server_authentication = null;
|
---|
501 | continue;
|
---|
502 | }
|
---|
503 | // Check if the collection is locked by someone else; if so, see if the user wants to steal the lock
|
---|
504 | else if (command_output.startsWith("ERROR: Collection is locked by: ")) {
|
---|
505 | if (JOptionPane.showConfirmDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Steal_Lock_Message", command_output.substring("ERROR: Collection is locked by: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.YES_NO_OPTION) == JOptionPane.NO_OPTION) {
|
---|
506 | // The user has decided to cancel the action
|
---|
507 | throw new RemoteGreenstoneServerAction.ActionCancelledException();
|
---|
508 | }
|
---|
509 |
|
---|
510 | // The user has decided to steal the lock... rerun the command with "&steal_lock="
|
---|
511 | gliserver_args += "&steal_lock=";
|
---|
512 | continue;
|
---|
513 | }
|
---|
514 | // Handle other types of errors by throwing an exception
|
---|
515 | else if (command_output.startsWith("ERROR: ")) {
|
---|
516 | throw new Exception(command_output.substring("ERROR: ".length()));
|
---|
517 | } else if (command_output.indexOf("ERROR: ") != -1) { // check if ERROR occurs anywhere else in the output
|
---|
518 | throw new Exception(command_output);
|
---|
519 | }
|
---|
520 |
|
---|
521 |
|
---|
522 | // There were no exceptions thrown so the action must have succeeded
|
---|
523 | return command_output;
|
---|
524 | }
|
---|
525 | }
|
---|
526 |
|
---|
527 |
|
---|
528 | /** Returns the command output if the action completed, throws some kind of exception otherwise. */
|
---|
529 | String uploadFile(String gliserver_args, String file_path)
|
---|
530 | throws Exception
|
---|
531 | {
|
---|
532 | while (true) {
|
---|
533 | // Check that Configuration.gliserver_url is set
|
---|
534 | if (Configuration.gliserver_url == null) {
|
---|
535 | throw new Exception("Empty gliserver URL: please set this in Preferences before continuing.");
|
---|
536 | }
|
---|
537 |
|
---|
538 | // Ask for authentication information (if necessary), then perform the action
|
---|
539 | authenticateUser();
|
---|
540 | String gliserver_url_string = Configuration.gliserver_url.toString();
|
---|
541 | String command_output = uploadFileInternal(gliserver_url_string, gliserver_args, file_path);
|
---|
542 | // System.err.println("Command output: " + command_output);
|
---|
543 |
|
---|
544 | // Check the first line to see if authentication has failed; if so, go around the loop again
|
---|
545 | if (command_output.startsWith("ERROR: Authentication failed:")) {
|
---|
546 | JOptionPane.showMessageDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Error", command_output.substring("ERROR: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.ERROR_MESSAGE);
|
---|
547 | remote_greenstone_server_authentication = null;
|
---|
548 | continue;
|
---|
549 | }
|
---|
550 | // Check if the collection is locked by someone else; if so, see if the user wants to steal the lock
|
---|
551 | else if (command_output.startsWith("ERROR: Collection is locked by: ")) {
|
---|
552 | if (JOptionPane.showConfirmDialog(Gatherer.g_man, Dictionary.get("RemoteGreenstoneServer.Steal_Lock_Message", command_output.substring("ERROR: Collection is locked by: ".length())), Dictionary.get("RemoteGreenstoneServer.Error_Title"), JOptionPane.YES_NO_OPTION) == JOptionPane.NO_OPTION) {
|
---|
553 | // The user has decided to cancel the action
|
---|
554 | throw new RemoteGreenstoneServerAction.ActionCancelledException();
|
---|
555 | }
|
---|
556 |
|
---|
557 | // The user has decided to steal the lock... rerun the command with "&steal_lock="
|
---|
558 | gliserver_args += "&steal_lock=";
|
---|
559 | continue;
|
---|
560 | }
|
---|
561 | // Handle other types of errors by throwing an exception
|
---|
562 | else if (command_output.startsWith("ERROR: ")) {
|
---|
563 | throw new Exception(command_output.substring("ERROR: ".length()));
|
---|
564 | }
|
---|
565 |
|
---|
566 | // There were no exceptions thrown so the action must have succeeded
|
---|
567 | return command_output;
|
---|
568 | }
|
---|
569 | }
|
---|
570 |
|
---|
571 |
|
---|
572 | // ----------------------------------------------------------------------------------------------------
|
---|
573 | // NETWORK LAYER
|
---|
574 | // ----------------------------------------------------------------------------------------------------
|
---|
575 |
|
---|
576 |
|
---|
577 | /** Returns the command output if the action completed, throws some kind of exception otherwise. */
|
---|
578 | private String downloadFileInternal(String download_cgi, String cgi_args, String file_path)
|
---|
579 | throws Exception
|
---|
580 | {
|
---|
581 | DebugStream.println("gliserver URL: " + download_cgi);
|
---|
582 | System.err.println("gliserver args: " + cgi_args);
|
---|
583 |
|
---|
584 | // Add username and password, and a timestamp
|
---|
585 | cgi_args += "&un=" + remote_greenstone_server_authentication.getUserName();
|
---|
586 | cgi_args += "&pw=" + new String(remote_greenstone_server_authentication.getPassword());
|
---|
587 | cgi_args += "&ts=" + System.currentTimeMillis();
|
---|
588 | if (Gatherer.GS3){
|
---|
589 | cgi_args += "&site=" + Configuration.site_name;
|
---|
590 | }
|
---|
591 |
|
---|
592 | URL download_url = new URL(download_cgi);
|
---|
593 | URLConnection dl_connection = download_url.openConnection();
|
---|
594 | dl_connection.setDoOutput(true);
|
---|
595 | OutputStream dl_os = dl_connection.getOutputStream();
|
---|
596 |
|
---|
597 | PrintWriter dl_out = new PrintWriter(dl_os);
|
---|
598 | dl_out.println(cgi_args);
|
---|
599 | dl_out.close();
|
---|
600 |
|
---|
601 | // Download result from running cgi script
|
---|
602 | InputStream dl_is = dl_connection.getInputStream();
|
---|
603 | BufferedInputStream dl_bis = new BufferedInputStream(dl_is);
|
---|
604 | DataInputStream dl_dbis = new DataInputStream(dl_bis);
|
---|
605 |
|
---|
606 | String first_line = "";
|
---|
607 | byte[] buf = new byte[1024];
|
---|
608 | int len = dl_dbis.read(buf);
|
---|
609 | if (len >= 0) {
|
---|
610 | String first_chunk = new String(buf, 0, len);
|
---|
611 | // first_line = first_chunk.substring(0, ((first_chunk.indexOf("\n") != -1) ? first_chunk.indexOf("\n") : len));
|
---|
612 | first_line = first_chunk.substring(0, ((first_chunk.indexOf("\n") != -1) ? first_chunk.indexOf("\n") : ((first_chunk.length()<len) ? first_chunk.length():len)));
|
---|
613 | // Save the data to file
|
---|
614 | FileOutputStream zip_fos = new FileOutputStream(file_path);
|
---|
615 | BufferedOutputStream zip_bfos = new BufferedOutputStream(zip_fos);
|
---|
616 |
|
---|
617 | while (len >= 0) {
|
---|
618 | zip_bfos.write(buf, 0, len);
|
---|
619 | len = dl_dbis.read(buf);
|
---|
620 | }
|
---|
621 |
|
---|
622 | zip_bfos.close();
|
---|
623 | zip_fos.close();
|
---|
624 | }
|
---|
625 |
|
---|
626 | dl_dbis.close();
|
---|
627 | dl_bis.close();
|
---|
628 | dl_is.close();
|
---|
629 | return first_line;
|
---|
630 | }
|
---|
631 |
|
---|
632 |
|
---|
633 | /** Returns the command output if the action completed, throws some kind of exception otherwise. */
|
---|
634 | private String sendCommandToServerInternal(String gliserver_url_string, String cgi_args, GShell shell)
|
---|
635 | throws Exception
|
---|
636 | {
|
---|
637 | DebugStream.println("gliserver URL: " + gliserver_url_string);
|
---|
638 | System.err.println("gliserver args: " + cgi_args);
|
---|
639 |
|
---|
640 | // Add username and password, and a timestamp
|
---|
641 | if(isAuthenticationRequired(cgi_args)) {
|
---|
642 | cgi_args += "&un=" + remote_greenstone_server_authentication.getUserName();
|
---|
643 | cgi_args += "&pw=" + new String(remote_greenstone_server_authentication.getPassword());
|
---|
644 | }
|
---|
645 | cgi_args += "&ts=" + System.currentTimeMillis();
|
---|
646 | if (Gatherer.GS3){
|
---|
647 | cgi_args += "&site=" + Configuration.site_name;
|
---|
648 | }
|
---|
649 |
|
---|
650 | URL gliserver_url = new URL(gliserver_url_string + "?" + cgi_args);
|
---|
651 | URLConnection gliserver_connection = gliserver_url.openConnection();
|
---|
652 |
|
---|
653 | // Read the output of the command from the server, and return it
|
---|
654 | StringBuffer command_output_buffer = new StringBuffer(2048);
|
---|
655 | InputStream gliserver_is = gliserver_connection.getInputStream();
|
---|
656 | BufferedReader gliserver_in = new BufferedReader(new InputStreamReader(gliserver_is, "UTF-8"));
|
---|
657 | String gliserver_output_line = gliserver_in.readLine();
|
---|
658 | while (gliserver_output_line != null) {
|
---|
659 | if (shell != null) {
|
---|
660 | shell.fireMessage(gliserver_output_line);
|
---|
661 | if (shell.hasSignalledStop()) {
|
---|
662 | throw new RemoteGreenstoneServerAction.ActionCancelledException();
|
---|
663 | }
|
---|
664 | }
|
---|
665 | command_output_buffer.append(gliserver_output_line + "\n");
|
---|
666 | gliserver_output_line = gliserver_in.readLine();
|
---|
667 | }
|
---|
668 | gliserver_in.close();
|
---|
669 |
|
---|
670 | return command_output_buffer.toString();
|
---|
671 | }
|
---|
672 |
|
---|
673 |
|
---|
674 | /** Returns the command output if the action completed, throws some kind of exception otherwise. */
|
---|
675 | private String uploadFileInternal(String upload_cgi, String cgi_args, String file_path)
|
---|
676 | throws Exception
|
---|
677 | {
|
---|
678 | System.err.println("gliserver URL: " + upload_cgi);
|
---|
679 | System.err.println("gliserver args: " + cgi_args);
|
---|
680 |
|
---|
681 | //For a remote GS3
|
---|
682 | //GS3 is running on Tomcat, and Tomcat requires a connection timeout to be set up at the client
|
---|
683 | //side while uploading files. As HttpURLConnection couldn't set the connection timeout, HttpClient.jar
|
---|
684 | //from Jakarta is applied to solve this problem only for uploading files.
|
---|
685 | if (Gatherer.GS3) {
|
---|
686 |
|
---|
687 | // Setup the POST method
|
---|
688 | PostMethod httppost = new PostMethod(upload_cgi+"?"+cgi_args); // cgi_args: QUERY_STRING on perl server side
|
---|
689 |
|
---|
690 | // construct the multipartrequest form
|
---|
691 | String[] cgi_array=cgi_args.split("&");// get parameter-value pairs from cgi_args string
|
---|
692 | Part[] parts=new Part[cgi_array.length+5];
|
---|
693 |
|
---|
694 | // The FilePart: consisting of the (cgi-arg) name and (optional) filename in the Content-Disposition
|
---|
695 | // of the POST request Header (see CGI.pm), and the actual zip file itself. It uses the defaults:
|
---|
696 | // Content-Type: application/octet-stream; charset=ISO-8859-1,Content-Transfer-Encoding: binary
|
---|
697 | parts[0]= new FilePart("uploaded_file", "zipFile", new File(file_path));
|
---|
698 |
|
---|
699 | parts[1]= new StringPart("un", remote_greenstone_server_authentication.getUserName());
|
---|
700 | parts[2]= new StringPart("pw", new String(remote_greenstone_server_authentication.getPassword()));
|
---|
701 | parts[3]= new StringPart("ts", String.valueOf(System.currentTimeMillis()));
|
---|
702 | parts[4]= new StringPart("site", Configuration.site_name);
|
---|
703 | // find all parameters of cgi-args and add them into Part[]
|
---|
704 | for (int i=0; i<cgi_array.length;i++){
|
---|
705 | parts[5+i]=new StringPart(cgi_array[i].substring(0,cgi_array[i].indexOf("=")),cgi_array[i].substring(cgi_array[i].indexOf("=")+1,cgi_array[i].length()));
|
---|
706 | }
|
---|
707 |
|
---|
708 | // set MultipartRequestEntity on the POST method
|
---|
709 | httppost.setRequestEntity(new MultipartRequestEntity(parts, httppost.getParams()));
|
---|
710 |
|
---|
711 | // See file gli/request.txt for the multipart request that's been generated:
|
---|
712 | //httppost.getRequestEntity().writeRequest(new FileOutputStream("request.txt", true)); // true: appends
|
---|
713 |
|
---|
714 | //set up the HttpClient connection
|
---|
715 | HttpClient client=new HttpClient();
|
---|
716 | client.getParams().setBooleanParameter(HttpMethodParams.USE_EXPECT_CONTINUE, false);
|
---|
717 | client.getParams().setConnectionManagerTimeout(200000); //set the connection timeout
|
---|
718 | // get the output of the command from the server
|
---|
719 | String command_output = "";
|
---|
720 | try{
|
---|
721 | client.executeMethod(httppost);
|
---|
722 | if (httppost.getStatusCode() == HttpStatus.SC_OK) {
|
---|
723 | command_output = httppost.getStatusLine().toString();
|
---|
724 | } else {
|
---|
725 | command_output = httppost.getStatusLine().toString();
|
---|
726 | System.out.println("Unexpected failure: " + httppost.getStatusLine().toString());
|
---|
727 | }
|
---|
728 | }catch(IOException e){
|
---|
729 | e.printStackTrace();
|
---|
730 | }finally{
|
---|
731 | httppost.releaseConnection();
|
---|
732 | }
|
---|
733 | return command_output;
|
---|
734 | }
|
---|
735 |
|
---|
736 | //For a remote GS2
|
---|
737 | // Add username and password, and a timestamp
|
---|
738 | cgi_args += "&un=" + remote_greenstone_server_authentication.getUserName();
|
---|
739 | cgi_args += "&pw=" + new String(remote_greenstone_server_authentication.getPassword());
|
---|
740 | cgi_args += "&ts=" + System.currentTimeMillis();
|
---|
741 |
|
---|
742 | // Open a HTTP connection to the URL
|
---|
743 | URL url = new URL(upload_cgi);
|
---|
744 | HttpURLConnection gliserver_connection = (HttpURLConnection) url.openConnection();
|
---|
745 |
|
---|
746 | gliserver_connection.setDoInput(true); // Allow Inputs
|
---|
747 | gliserver_connection.setDoOutput(true); // Allow Outputs
|
---|
748 | gliserver_connection.setUseCaches(false); // Don't use a cached copy.
|
---|
749 |
|
---|
750 | gliserver_connection.setRequestProperty("Connection", "Keep-Alive");
|
---|
751 |
|
---|
752 | // Send zip file to server
|
---|
753 | File file = new File(file_path);
|
---|
754 | FileInputStream fileInputStream = new FileInputStream(file);
|
---|
755 |
|
---|
756 | // Add file size argument, because IIS 6 needs a lot of help
|
---|
757 | int file_size = fileInputStream.available();
|
---|
758 | cgi_args += "&fs=" + file_size;
|
---|
759 |
|
---|
760 | DataOutputStream dos = new DataOutputStream(gliserver_connection.getOutputStream());
|
---|
761 | dos.writeBytes(cgi_args + "\n");
|
---|
762 |
|
---|
763 | // create a buffer of maximum size
|
---|
764 | final int maxBufferSize = 1024;
|
---|
765 | int bytesAvailable = file_size;
|
---|
766 | int bufferSize = Math.min(bytesAvailable, maxBufferSize);
|
---|
767 | byte[] buffer = new byte[bufferSize];
|
---|
768 |
|
---|
769 | // read file and write it into form...
|
---|
770 | // !! This uses a lot of memory when the file being uploaded is big -- Java seems to need to keep
|
---|
771 | // the entire file in the DataOutputStream? (Use Runtime.getRuntime().totalMemory() to see)
|
---|
772 | int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
|
---|
773 | while (bytesRead > 0) {
|
---|
774 | dos.write(buffer, 0, bytesRead);
|
---|
775 | bytesAvailable = fileInputStream.available();
|
---|
776 | bufferSize = Math.min(bytesAvailable, maxBufferSize);
|
---|
777 | bytesRead = fileInputStream.read(buffer, 0, bufferSize);
|
---|
778 | }
|
---|
779 |
|
---|
780 | // close streams
|
---|
781 | fileInputStream.close();
|
---|
782 | dos.flush();
|
---|
783 | dos.close();
|
---|
784 |
|
---|
785 | // Read the output of the command from the server, and return it
|
---|
786 | String command_output = "";
|
---|
787 | InputStream gliserver_is = gliserver_connection.getInputStream();
|
---|
788 | BufferedReader gliserver_in = new BufferedReader(new InputStreamReader(gliserver_is, "UTF-8"));
|
---|
789 | String gliserver_output_line = gliserver_in.readLine();
|
---|
790 | while (gliserver_output_line != null) {
|
---|
791 | command_output += gliserver_output_line + "\n";
|
---|
792 | gliserver_output_line = gliserver_in.readLine();
|
---|
793 | }
|
---|
794 | gliserver_in.close();
|
---|
795 |
|
---|
796 | return command_output;
|
---|
797 | }
|
---|
798 |
|
---|
799 |
|
---|
800 | // ----------------------------------------------------------------------------------------------------
|
---|
801 | // UTILITIES
|
---|
802 | // ----------------------------------------------------------------------------------------------------
|
---|
803 |
|
---|
804 |
|
---|
805 | public String getPathRelativeToDirectory(File file, String directory_path)
|
---|
806 | {
|
---|
807 | String file_path = file.getAbsolutePath();
|
---|
808 | if (!file_path.startsWith(directory_path)) {
|
---|
809 | System.err.println("ERROR: File path " + file_path + " is not a child of " + directory_path);
|
---|
810 | return file_path;
|
---|
811 | }
|
---|
812 |
|
---|
813 | String relative_file_path = file_path.substring(directory_path.length());
|
---|
814 | if (relative_file_path.startsWith(File.separator)) {
|
---|
815 | relative_file_path = relative_file_path.substring(File.separator.length());
|
---|
816 | }
|
---|
817 | return relative_file_path;
|
---|
818 | }
|
---|
819 | } |
---|